William sykes and squire sykes



Inventors Mya ttm-nay.

(No Modl.) l

W. 8a S.' SYKES.

SAND MOLDING MACHINE.

Pateted Mar. 1888.

Hlm l Il01...1000001y.

No. 380,300. Fg.l

Witnesses. W fyi/, j @h/ @0.72m

UNITED STATES PATENT EErcE.

VILLIAM SYKES AND SQUIRE SYKES, OF BUFFALO, NEXV YORK.

SAND-MOLD.:

NG MACHINE.

SPECIFICATION forming part o Letters Patent No. 380,300, dated March 27,1888.

Application tiled February 10, 1888. Serial No. 263,622. (No model.)

To @ZZ whom i5 may concern.-

Be it known that we,W1LLL\.M SYKES and Soulan SYirEs, both citizens of the United Stat-es, residing in Buffalo, in the county of Erie and State of 1\` ew York, have invented certain new and useful Improvementsin Sand- Molding Machines, of which the following is a specilication.

Our invention relates to certain improvements in machines for molding in sand, and will be fully and clearly hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure l is a front elevation of the machine, showing also a vertical longitudinal section through a iiask connected thereto. Fig. 2 is a side elevation of the machine and a vertical crosssection through a flask in position to receive the sand. Fig. 3 is a top plan View. Fig. 4 represents a vertical central section through a portion of the framein lineal), Fig. 1. Fig. 5 is an enlarged sectional elevation showing a spring-bolt and a portion of the paris connected with it for holding or releas ing the oscillating moldingplate. Fig. 6 is a small portion of the machine, showing an enlarged end view of the springbolt. Fig. 7 represents a side elevation of the rear springholt for preventing the reversible molding-table from moving in one direction, while permitting it to turn freely in the opposite direc tion, showing also a vertical cross-section through the portion to which it is attached.

The frame 1 of the machine is preferably made of cast-iron, but any other suitable material may be used. It is secured together by cross-pieces 2 3.

On the inner sides of each of the framepieces 1 are two ribs, 4, leaving a slideway, 5, between them, into which the angular headpieces 6 7 are secured by bolts 8, which pass through slots 9 and screwinto the side framepieces, 1, or pass through and are secured by nuts i. (See Fig. 4.) The slots 9 permit the head-pieces to be adjusted vertically at any point up or down, and when so adj usted they are rigidly secured by the bolts 8. These head-pieces 6 7 are each provided with boxes 10, in which the bearings 12 of the reversible molding-table 11 are mounted. By this construction it will be seen that the reversible table 11 may be adjusted vertically up or down by means of the bolts 8, so as to answer for molding-.flasks of different heights.

Upon the box l() at one side of the table is rigidly secured a collar, 13, having a projecting portion, 111, to which is pivoted bya pin, 15, an arm, 16. This arm 16 is connected by a uut, 17, with a spring-bolt, 18, inclosed tvithin the portion 19. (See Figs. 5, 6,in which an enlarged section of the springbolt and its several parts is shown.) The bolt 18 passes through the portion 7 until stopped by the collar 20.

- Between the collar 2O and the removable end piece, 2l, is a spiral spring, 22, and the back of the bolt passes through the arm 1G, and is then secured by the nut 17, as above mentioned. The top portion, c, of the end of this boltis liat,while its underside is beveled. At the opposite side and end of the table is another spring-bolt, 23, secured to the portion 6 in a similar case, 19, and constructed exactly in the same way,with the exception that it has nothing at the outer end but the nut 24. From this construction it will be seen that by moving the arm 16 in the direction ofthe arrow n the end of the bolt 18Will be drawn in,so that the machine can be turned down, and, as ou the opposite side, the end ofthe table rests on top of the end of the bolt 23, and merely moves away from it. The tables may in this manner be easily turned over.

the rear of the machine striking against the under beveled side of the bolt 23 presses it in until' the edge of the table passes by it, when the spring forcesit forward just under the edge of the table, so that both sides of the molding-table at the front and rear are supported and securely held by the ends of the two springbolts until released by moving the arm 16, as before mentioned.

To the molding-table are secured by nuts 25 the clamping-irons 26, for holding the molding-flask. They are arranged two on each side of and at opposite corners of the table and diagonally from each other, as will be seen. At .the front of the machine are two slideways, 27, upon which the board or table for holding the flask is moved out and off from the machine.

In the lower portions of the slideways 5 are the side of the molding-table at the front ofA The end of that side of the moldingtable ate IOO guide-pieces 2S, (one of which is shown in Fig. 4,) forming a portion of the crosspiece 29, upon which is secured the vertically-movable table 30.

To the under side of the cross-piece 29 are pivoted by pins 31 two connecting-rods, 32, having their opposite ends pivoted to cranks 33 by pins 34. These cranks are secured to a shaft, 35, mounted in bearings on the frame of the machine. Io one end of the shaft 35 is rigidly secured a hand-lever, 36. It will be seen from this construction that by turning this hand-lever the table 30 may be moved vertically up or down, as may be desired. The mold-board 37 is secured to the reversible table by screws 38. To this mold-board is se cured in any well-knoWn Way any pattern or series of patterns that maybe desired-the pattern 39, for instance. In Figs. l and 2 we have shown an ordinary flask, 40.

The operation of the machine is as follows: The mold-board, provided with a series of patterns or with a pattern, 39, is secured -fio the reversible molding-table, as above mentioned. The flask 40 is now put on, as shown in Figs. 1, 2, the holes in the ears of the ask fitting over the pins 41. The sand is now rammed in by hand in the usual way and leveled off. A board, 42, is then'put on `and the whole secured to the reversible table by the clamping-bars 26. The molding-table is now reversed and secured by the bolts, which operation brings the liask, mold, and pattern below and the other half` of the pattern at the top of the table in the proper position for an' other mold. The mold already made and below the table is taken off and the pattern removed by raising the table 30 up to meet it. The clamping portions of the bars 26 are now removed, and by tapping the top of the reversing table slightly when required and letting the table 30 down the mold is removed from the pattern or patterns more easily and steadily than can be done in the usual Way by hand. The mold is now removed from the machine and a new flask put on, and the operation repeated as often as a mold is made and the molding-table reversed.

XVe claim as our inventionl. In a sand-molding machine, the combination of a reversible molding-table provided with olampingirons on each side and mounted in bearings at the top of the machine, two spring-bolts, one at each side of the moldingtable, for keeping it in position, a hand-lever pivoted to the machine for releasing one of the bolts when reversing the table, and a verticall y-movable table below the reversing table, mounted in slideways in the frame, and connected by connecting-rods and cranks to a crankshaft provided with a hand-lever, substantially as and for the purposes described.

2. In a sand-molding machine, thecombination of a reversible molding-table mounted in vertically-adjustable bearings, spring-bolts secured to the vertically-adjustable bearingrsupports for holding the table in position When reversed, a hand-lever pivoted to the machine for releasing one of thespring-bolts preparatory to reversing the table, and a vertieallymovable table below lthe reversing table, mounted in slideways in the frame, and connected by connecting-rods and cranks to a crank-shaft mounted in bearings in the frame and provided with a hand-lever for operating it, substantially as and for the purposes described.

WILLIAM SYKES. SQUIRE SYKES. Witnesses:

JAMES SANGSTER, ARTHUR J. SANGSTER. 

